Battling a record dry spell that has left reservoirs badly drained, the Las Virgenes County water district on the outskirts of Los Angeles has decided to fill its reservoir with hundreds of black plastic balls. The balls sit on top of the water and block the sunlight from hitting it, helping to reduce water evaporation as well as natural contamination and certain chemical reactions that could cause algae blooms in the reservoirs.Aug 13, 2015

More migrants arrived to the Greek island of Kos in the early hours of Thursday (13 August), as Greece bolstered security at the holiday island struggling to cope with an influx of refugees.Aug 13, 2015